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5 June, 02:25

A package of 4 mechanical pencils comes with 2 free erasers. If you get a total of 12 free erasers, how many packages of pencils did you buy? If you get 18 free erasers, how many packages of pencils did you buy?

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Answers (2)
  1. 5 June, 03:34
    0
    6 packs, 9 packs

    Step-by-step explanation:

    The ratio of mechanical pencil to free eraser is 2:4, or 1:2.

    So that means, for every free eraser you get, you bought the double amount of pencils.

    12 free erasers x 2 = 24 pencils

    18 free erasers x 2 = 36 pencils

    And a pack of pencils contains 4.

    24/4 = 6 packs

    36/4 = 9 packs
  2. 5 June, 04:28
    0
    6 packs and 9 packs
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